28090835 has 8 divisors (see below), whose sum is σ = 35483280. Its totient is φ = 21289824.

The previous prime is 28090831. The next prime is 28090837. The reversal of 28090835 is 53809082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28090835 - 2² = 28090831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28090795 and 28090804.

It is not an unprimeable number, because it can be changed into a prime (28090831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147752 + ... + 147941.

It is an arithmetic number, because the mean of its divisors is an integer number (4435410).

Almost surely, 2^28090835 is an apocalyptic number.

28090835 is a deficient number, since it is larger than the sum of its proper divisors (7392445).

28090835 is a wasteful number, since it uses less digits than its factorization.

28090835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295717.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 28090835 is about 5300.0787729995. The cubic root of 28090835 is about 303.9869100723.

The spelling of 28090835 in words is "twenty-eight million, ninety thousand, eight hundred thirty-five".